Asked by George
A train travels due east at a velocity of 85.5 km/hr. A passenger walks from the front of the train to the back at a velocity of 3.7 km/hr. What is the velocity of the passenger to an observer who is seated on a train going due west at a velocity of 64.7 km/hr?
What I've done so far:
I found the total distance east of the passenger on train one, which I think is 85.5-3.7, so the passenger on train 1 is going 81.8 km/hr.
I think the final step is to add this distance (81.8) to the other train's distance (64.7) to find the relative velocity. Adding these together gave me 1.5 * 10^2 (significant figures). Is this the proper way to go about this answer?
What I've done so far:
I found the total distance east of the passenger on train one, which I think is 85.5-3.7, so the passenger on train 1 is going 81.8 km/hr.
I think the final step is to add this distance (81.8) to the other train's distance (64.7) to find the relative velocity. Adding these together gave me 1.5 * 10^2 (significant figures). Is this the proper way to go about this answer?
Answers
Answered by
Steve
yes. But it's probably better just to say 146.5 km/hr
the numbers are not so big as to need scientific notation, and they were all defined with one decimal place of accuracy.
the numbers are not so big as to need scientific notation, and they were all defined with one decimal place of accuracy.
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